1998 TOYOTA LAND CRUISER horn

DI1AH-21
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
I24938
T5 DI-964
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
1157 Author
: Date
:
2004 LAND CRUISER (RM1071U)
TERMINALS OF ECU
Symbols (Terminals No.)Wiring ColorConditionSpecified condition
SH- e Body Ground
(T5-1 e Body Ground)W e W-BAlways10 - 14 V
+B1 e Body ground
(T5-2 eBody ground)LG eBody
GroundAlways10 - 14 V
+B2 e Body Ground
(T5-3 e Body Ground)B e Body
GroundAlways10 - 14 V
HORN e E
(T5-5 e T5-29)G-O e W-BHorn switch ºOFFº10 - 14 V
IG e E
(T5-10 e T5-29)B-W e W-BIgnition switch is turned to ºONº position10 - 14 V
GBS e EYGWBGlass sensor is ºONº10 - 14 VGBS e E
(T5-1 1 e T5-29)Y-G e W-BGlass sensor is ºOFFºBelow 1 W
KSW e ERBWB
Key unlock warning switch ºONº
(Key inserted)Below 1 WKSW e E
(T5-12 e T5-29)R-B e W-BKey unlock warning switch ºOFFº
(Key removed)1 MW or higher
IND e E
(T5-25 e T5-29)G-R eW-BDuring set preparation3 - 5 V
E e Body ground
(T5-29 e Body Ground)W-B e Body
GroundAlways10 - 14 V
MPX1
(T5-31)BMultiplex communication circuit-
DSWH e ELRWB
Engine hood courtesy switch ºONº
(Engine hood opened)Below 1 WDSWH e E
(T5-34 e T5-29)L-R e W-BEngine hood courtesy switch ºOFFº
(Engine hood closed)1 MW or higher

2004 LAND CRUISER (EWD548U)
9 B
The ºCurrent Flow Chartº section, describes which parts each power source (fuses, fusible links, and circuit breakers)
transmits current to. In the Power Source circuit diagram, the conditions when battery power is supplied to each system
are explained. Since all System Circuit diagrams start from the power source, the power source system must be fully
understood.
ACC
S 26
652
22
Battery30A AM2
StarterShort Pin
100A ALT Fusible Link Block
60A ABS10A ECU-B
7.5A DOME
15A EFI
10A HAZARD
20A RADIO NO.1
10A HORN
20A
10AFusePage
214
230
11 2
122 194
187
180
166
210 ABS
Cigarette Lighter
Combination Meter
Key Reminder and Seat Belt Warning
Light Auto Turn Off
Theft Deterrent and Door Lock ControlABS and Traction Control
Cruise Control
Electronically Controlled Transmission
Multiplex Communication System STOPSystem
DOMEHeadlight
Interior Light
3 EA2 1 EA1E 6
E 7
E 7
2
2
2
2 2
2 2
2 INJECTION Relay
STARTER Relay B
B
B B-O
1
1 2
23
4
3
4W-B W-B
B-W
B-W E 7
E 7B
BW1.25B FL MAIN
50A MAIN
7.5A AM2
15A HAZ-RADIO 2
22
2
2W
WEB1
EB17
6
W-RI 2 I 2 I 2
WW
W W W
1 1
1 140A DOOR LOCK CB
7.5A DOME 1W-L
R 1
1
2
431
1 1
1
111 G
G
W-R 15A TAIL
20A DEFOG
B-Y 84
32Ignition SW I 8
B-Y
11P-L Battery
15A RAD CIG2
TAIL
Relay
Power Source J POWER SOURCE (Current Flow Chart)
Engine Room R/B (See Page 20)
2
W W
B B B B B
W-R
WW W
G-WAM2
AM1 IG2
IG1W
W
The chart below shows the route by which current flows from the battery to each electrical source
(Fusible Link, Circuit Breaker, Fuse, etc.) and other parts.
*The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.

2004 LAND CRUISER (EWD548U)
69 G
Position of Parts in Engine Compartment
H 1 Headlight LH (High)
H 2 Headlight LH (Low)
H 3 Headlight RH (High)
H 4 Headlight RH (Low)
H 5 Heated Oxygen Sensor (Bank 1 Sensor 1)
H 6 Heated Oxygen Sensor (Bank 1 Sensor 2)
H 7 Heated Oxygen Sensor (Bank 2 Sensor 1)
H 8 Heated Oxygen Sensor (Bank 2 Sensor 2)
H 9 Horn LH
H 10 Horn RH
I 1 Ignition Coil and Igniter No.1
I 2 Ignition Coil and Igniter No.2
I 3 Ignition Coil and Igniter No.3
I 4 Ignition Coil and Igniter No.4
I 5 Ignition Coil and Igniter No.5
I 6 Ignition Coil and Igniter No.6
I 7 Ignition Coil and Igniter No.7
I 8 Ignition Coil and Igniter No.8
I 9 Injector No.1
I 10 Injector No.2
I 11 Injector No.3
I 12 Injector No.4
I 13 Injector No.5
I 14 Injector No.6
I 15 Injector No.7
I 16 Injector No.8K 1 Knock Sensor 1
K 2 Knock Sensor 2
M 1 Mass Air Flow Meter
M 4 Master Cylinder Pressure Sensor
N 1 Noise Filter (Ignition)
O 2 Oil Pressure Sender
P 1 Park/Neutral Position SW
P 2 Parking Light LH
P 3 Parking Light RH
S 1 Starter
S 2 Starter
T 1 Theft Deterrent Horn
T 16 Throttle Control Motor and Sensor
T 17 Turbine Speed Sensor
V 2 Vehicle Speed Sensor (Combination Meter)
V 3 Vehicle Speed Sensor
(Electronically Controlled Transmission)
V 4 VSV (EVAP)
V 9 VSV (Canister Closed Valve)
W 1 Washer Motor

2004 LAND CRUISER (EWD548U)
18E GLOSSARY OF TERMS AND SYMBOLS
BATTERY
Stores chemical energy and
converts it into electrical energy.
Provides DC current for the auto's
various electrical circuits.GROUND
The point at which wiring attaches to
the Body, thereby providing a return
path for an electrical circuit; without a
ground, current cannot flow.
CAPACITOR (Condenser)
A small holding unit for temporary
storage of electrical voltage.HEADLIGHTS
Current flow causes a headlight
filament to heat up and emit light. A
headlight may have either a single
(1) filament or a double (2) filament
1. SINGLE
FILAMENT
CIGARETTE LIGHTER
An electric resistance heating
element.2. DOUBLE
FILAMENT
CIRCUIT BREAKER
Basically a reusable fuse, a circuit
breaker will heat and open if too
much current flows through it.
Some units automatically reset when
cool, others must be manually reset.HORN
An electric device which sounds a
loud audible signal.
DIODE
A semiconductor which allows
current flow in only one direction.IGNITION COIL
Converts low-voltage DC current
into high-voltage ignition current for
firing the spark plugs.
DIODE, ZENERA diode which allows current flow in one
direction but blocks reverse flow only up
to a specific voltage. Above that potential,
it passes the excess voltage. This acts as
a simple voltage regulator.LIGHT
Current flow through a filament
causes the filament to heat up and
emit light.
PHOTODIODE
The photodiode is a semiconductor
which controls the current flow
according to the amount of light.LED (LIGHT EMITTING DIODE)
Upon current flow, these diodes emit
light without producing the heat of a
comparable light.
DISTRIBUTOR, IIA
Channels high-voltage current from
the ignition coil to the individual
spark plugs.METER, ANALOG
Current flow activates a magnetic
coil which causes a needle to move,
thereby providing a relative display
against a background calibration.
FUSEA thin metal strip which burns through
when too much current flows through it,
thereby stopping current flow and
protecting a circuit from damage.
FUSIBLE LINK
METER, DIGITAL
Current flow activates one or many
LED's, LCD's, or fluorescent
displays, which provide a relative or
digital display.
FUEL
FUSIBLE LINK
A heavy-gauge wire placed in high
amperage circuits which burns through on
overloads, thereby protecting the circuit.
The numbers indicate the crosssection
surface area of the wires.(for Medium Current Fuse)
(for High Current Fuse or
Fusible Link)MOTOR
A power unit which converts
electrical energy into mechanical
energy, especially rotary motion.
M

2004 LAND CRUISER (EWD548U)
M OVERALL ELECTRICAL WIRING DIAGRAM
1920
18 17
(
Cont. next page)
1 LAND CRUISER (
Cont' d)
1
T 1
114 C
21026 C
1 2
U 1
SH-WSB
KSW +B1 IG MPX1KSW MPX3
R- B
BR- B R- B W- B
T 5
QP ON ML KJ IH GF EDR- Y
SB
SB
LG
SB
B- W
L
L
L
L
SB
SB
SBB 7(
A)
, B 8(
B)
, B 9(
C)
M u ltip le x C o m m u n ic a tio n S y s te m
E
F
I
J
K
M
N
O
P L SB
L- W
L
L
L
SB
SB
SB
SRL
L- Y
Q W- B
TW- B
R
S W- B
SB
SB
SB
J14
E
E 1IL315 I U3
3E 18 3E23
SB
G
H
L D
B- WL- Y R- Y
L
IF Se t Bol t of
Cowl Side J /B LH2Q 20 2L 11 2I83P 3
3P 1 22 IL3
VUW- B
SB12 IL3
2Q 222Q 26
2I 28IL3
3Q 82
3B 4
18
2E 6IL3
6 EA2
2 1 5IL3
EAFront Right Side of
Fender Apron7IL3
3B 63Q 843IL3
14 IU314 IL3 15 IL3 9 IL3 20 IL3
3Q 74
3E 2531 12 11 34 23 25 5 29 3
2 1 GBS DSWH RE V IND HORN E +B 2
W- BR- B
B W- BG- OG- RB L- B Y- GLG B- WR- BB
SB Y- G LG SB
SB SB
W
SB L- B L- BW- B
SB
SB
SB
SB SB
SB L- W
W- BSB W- B W- B
BECU
11
Ho r n Re la y
<18- 4> Data Link Connec tor 3
<4- 7>E 3
W- B
Transponder Key
Computer
<4- 19>
Z 1
L- B
C B
CB
SB SB
SB SB 3Q 76
3E 27 3D 12
14 B(
*2) 21 A(
*1)
3A(
*1)
8B(
*2)
A
Transponder Key
Computer< 4- 20>
G- RG- R
G- R W- B
LP(
*1)
SECURITY(
*2)
GND(
*2) GND1(
*1)
M 5(
A)
, M 9(
B)
W- B* 1 : w/ Nav igation Sy st em
* 2 : w/o Navigation System
3Q 46
A SB
Engine Hood
Courtesy SW
Multi- DisplayTheft Deterrent Horn
Theft Deterrent ECU
Un lo ck War ni ng SW
Bo dy ECU
Junct ion Connector
Option Connect or
(
Glass Breakage Sensor)

2004 LAND CRUISER (EWD548U)
M OVERALL ELECTRICAL WIRING DIAGRAM
1
234
18 LAND CRUISER
2ACC
IG1 AM1 4
1 2
3 5
15A
WASHER 3A 9 3C 1 3Q 39
2C 12E 39
1B 1C
7. 5A AM1
120A J/B NO. 3 120A J/B NO. 2
140A ALT
IISe t Bol t o f
Co wl S i de J/ B RH
F15(
A)
, F16(
B)
, F17(
C)
B- G
B- G B- R B- GI18
IG1 NO. 3
Re l ay
Battery
120A MAIN2AM 2
3
1A 56
1B 68OFF
INT
LO+B +2 +1
HIINT1 INT2 +S B1
Of f
OnWF EW Front Washer SW Front Wiper SW
32 II3
MA A
IISet Bolt of Cowl
Side J/ B RH EB Fr ont Right Side
of Fender Apron3E 351C
10A
HORN
21 1B 1A41A15
2B 9
2Q 24
C C
8IH211
4 123
E 17 8 7 16 11 2+B +2 +1 +S WF EW
5
W- B
L L- R L- B L- WL- Y W- B
L L- R L- B L- W W- B G- OG- WG- R
SB SB G- O
W- B
L- Y L- YL- R L- W
L- BL
+2 +1 B SHORN
Re l ay 1
SB C
Theft Deterrent
ECU< 1- 17>
6 33 II3 34 II3 35 II3 2E 37
2Q 77 L- B
SB
25A
WIPER
3A 73G112A 1
2D 38
3A 13 3A10 3A15 3G 12 3G43G8J 3
J14
L
L
C1 9
H10 H 9
C18
Horn
F 5 2EA2
L
L W 1
L- Y
Front W iper and W asher Power Source
B- G B- G
Horn
Combination SW Combination SW
Front Wiper MotorHo r n
LHHor n
RH Ignition SW
Washer Motor
Junct ion
Connect or
Fus ible Link Bloc k Junction
Connector
II3 31L- Y
3II3

SYSTEM INDEX
M OVERALL ELECTRICAL WIRING DIAGRAM
2004 LAND CRUISER (EWD548U)
412
SYSTEMS LOCATION SYSTEMS LOCATION
Air Conditioning (Front) 31-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning (Rear) 31-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Auto Antenna 28-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Glare-Resistant EC Mirror with Compass 15-3. . . . . . . . . . .
Back-Up Light 10-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Center Differential Lock 14-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cigarette Lighter 21-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combination Meter 30-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise Control 5-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electronically Controlled Transmission and A/T Indicator 5-6. . . . . . . . . .
Engine Control 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Immobiliser System 4-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Wiper and Washer 18-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Garage Door Opener 15-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horn 18-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Illumination 9-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mirror Heater 11-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Moon Roof 17-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multi-Display (w/o Navigation System) 29-3. . . . . . . . . . . . . . . . . . . . . . .
Multiplex Communication System 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
* Automatic Light Control
* Door Lock Control
* Front Fog Light
* Headlight
* Interior Light
* Key Reminder* Light Auto Turn Off
* Power Window
* Theft Deterrent
* Wireless Door Lock Control
Navigation System 26-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Outlet 20-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Rear Quarter Window 11-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Seat 22-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Source 1~31-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Tilt and Power Telescopic 23-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio and Player (w/ Navigation System) 26-5. . . . . . . . . . . . . . . . . . . . .
Radio and Player (w/o Navigation System) 27-3. . . . . . . . . . . . . . . . . . . .
Rear Window Defogger 11-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Wiper and Washer 19-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Control Mirror 16-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat Belt Warning 25-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat Heater 21-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift Lock 24-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRS 13-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stop Light 10-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taillight 8-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TOYOTA Parking Assist (Rear View Monitor) 26-12. . . . . . . . . . . . . . . . .
Trailer Towing 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn Signal and Hazard Warning Light 6-2. . . . . . . . . . . . . . . . . . . . . . . . . .
VSC 12-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

L
CodePart Name Part NumberCodePart Name Part Number
2004 LAND CRUISER (EWD548U)
407
D21Door Lock Motor Front LHD21Door Unlock Detection SW Front LH
D22Door Lock Motor Front RHD22Door Unlock Detection SW Front RH90980-1 1150
D23Door Lock Motor Rear LH90980-11150
D23Door Unlock Detection SW Rear LH
D24Door Lock Motor Rear RHD24Door Unlock Detection SW Rear RH
D26DVD Automatic Changer90980-1 1971
D27Door Control Receiver90980-1 1909
E 1Electronically Controlled Transmission
Solenoid90980-12293
E 2Engine Coolant Temp. Sensor90980-10736
E 3Engine Hood Courtesy SW90980-1 1003
E 4Electronically Controlled Transmission
Pattern Select SW90980-10933
E 5Engine Control Module90980-12144
E 6Engine Control Module90980-12145
E 7Engine Control Module90980-12143
E 8Engine Control Module90980-12146
E 9Engine Control Module90980-12142
F 1Front Fog Light LH90980-1 1660F 2Front Fog Light RH90980-1 1660
F3Front Turn Signal Light LHF 3Side Marker Light LH90980-1 1020
F4Front Turn Signal Light RH90980-1 1020
F 4Side Marker Light RH
F 5Front Wiper Motor90980-1 1599
F 8Front Door Speaker LH90980-10935F 9Front Door Speaker RH90980-10935
F10Front Interior Light90980-12211F10Rear Personal Light90980-12211
F11Front Personal Light90980-10825
F12Fuel Pump90980-1 1077F12Fuel Sender90980-11077
F14Fuel Pump Resistor90980-1 1156
F15Fusible Link Block90980-1 1996
F16Fusible Link Block90980-1 1881
F17Fusible Link Block90980-1 1775
F18Fusible Link Block90980-10995
F19Fusible Link Block82675-60050
G 1Generator90980-1 1964
G 2Generator90980-09212
G 3Glove Box Light90980-1 1098
G 4Gateway ECU90980-1 1911
H 1Headlight LH (High)90980-1 1659
H 2Headlight LH (Low)90980-1 1660
H 3Headlight RH (High)90980-1 1659
H 4Headlight RH (Low)90980-1 1660
H 5Heated Oxygen Sensor (Bank 1 Sensor 1)90980-10869
H 6Heated Oxygen Sensor (Bank 1 Sensor 2)90980-1 1028
H 7Heated Oxygen Sensor (Bank 2 Sensor 1)90980-10869
H 8Heated Oxygen Sensor (Bank 2 Sensor 2)90980-1 1028
H 9Horn LH90980-10619H10Horn RH90980-10619
H11High Mounted Stop Light90980-1 1211
I 1Ignition Coil and Igniter No.1
I 2Ignition Coil and Igniter No.2
I 3Ignition Coil and Igniter No.3
I 4Ignition Coil and Igniter No.490980-1 1885I 5Ignition Coil and Igniter No.590980-1 1885
I 6Ignition Coil and Igniter No.6
I 7Ignition Coil and Igniter No.7
I 8Ignition Coil and Igniter No.8
I 9Injector No.1
I10Injector No.2
I11Injector No.3
I12Injector No.490980-1 1153I13Injector No.590980-11153
I14Injector No.6
I15Injector No.7
I16Injector No.8
I18Ignition SW90980-1 1615
I22Inner Mirror90980-1 1186
J 1Junction Connector90980-1 1398
J 2Junction Connector90980-1 1915
J 3Junction Connector90980-1 1398J 4Junction Connector90980-1 1398
J 5Junction Connector90980-1 1925
J 6Junction Connector90980-1 1927J 7Junction Connector90980-1 1927
J 8Junction Connector90980-10803
J 9Junction Connector90980-1 1927J10Junction Connector90980-1 1927
J11Junction Connector90980-10803
J12Junction Connector90980-1 1927
J13Junction Connector90980-1 1925
J14Junction Connector90980-1 1927
J15Junction Connector90980-1 1925